CN102785550A - Heating unit of automobile heat supply device - Google Patents
Heating unit of automobile heat supply device Download PDFInfo
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- CN102785550A CN102785550A CN2011101318022A CN201110131802A CN102785550A CN 102785550 A CN102785550 A CN 102785550A CN 2011101318022 A CN2011101318022 A CN 2011101318022A CN 201110131802 A CN201110131802 A CN 201110131802A CN 102785550 A CN102785550 A CN 102785550A
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Abstract
The invention relates to a heating unit of an automobile heat supply device, which is used to reduce the power consumed for heat supply of the automobile, prolong the operating range and prolong the recharging period of the automobile. The heating unit comprises a frame body, support carriers, microwave absorbing heating bodies and a microwave output unit, wherein the frame body is arranged inside an air supply flow path, is provided with a hollow part through which the supplied air can flow, and is composed of openings and metal materials; wherein the supplied air can flow out or flow into the weather side or the leeward of the openings in the air supply direction; the metal materials have the function of shielding microwaves in an electromagnetic mode; the support carriers are arranged inside the hollow part of the frame body; a plurality of microwave absorbing heating bodies are arranged at proper intervals relative to the support carriers; the microwave absorbing heating bodies are provided with hollow parts, wherein the two end parts of the hollow parts at the weather side or a leeward in the air supply direction are opened; the microwave output unit is arranged inside the frame body and is used for outputting microwaves towards each microwave absorbing heating body.
Description
Technical field
The present invention relates to the heating unit of heating system for vehicle, refer in detail in Vehicular air-conditioning unit or vehicle air pipeline, to be provided with and absorb microwave and heat-producing microwave absorbs exothermic body, the heating unit that the air of air-supply is heated with low consumption electric power.
Background technology
In recent years, improve and reduce CO for the fuel efficiency of seeking vehicle
2The gas discharge rate proposes the various motor vehicle driven by mixed powers of exploitation, elec. vehicle.In these vehicles, particularly elec. vehicle is because the electric power of the battery (storage battery) that utilization is carried when with electrical motor vehicle being gone driving comes driving motor, so the problem that power consumption is remarkable, cruising radius shortens is arranged.Therefore, though can make cruising radius elongated, there are the consumption efficiency step-down of vehicle weight increase, electric power, the problem that driving range (cruising radius) shortens and the frequency that charges uprises therewith concomitantly through increasing the capacity of cell of carrying.
Such a motor vehicle driven by mixed power, elec. vehicle need and will suppress to be Min. at the electric power of guaranteeing to go, consume in the for example air conditioner for vehicles beyond the electrical installation device of safety when going.Technology as the consumes electric power that reduces air conditioner for vehicles has for example proposed at the air conditioner for vehicles shown in the patent documentation 1.
In the air conditioner for vehicles shown in the patent documentation 1; Heater as being arranged in the vehicle air conditioning unit uses ptc heater (the Positive Temperature Coefficient that is arranged with many PTC thermally dependent resistors; PTC); In above-mentioned air conditioner for vehicles, be provided with the consumes electric power that the dump power of asking for the vehicle dump power that can supply with to ptc heater obtains the unit and ask for the consumes electric power of the ptc heater that the temperature according to the PTC thermally dependent resistor changes and obtain the unit; Through based on obtaining the dump power of asking for the unit with dump power and obtain the consumes electric power of asking for the unit with consumes electric power and control the PTC thermally dependent resistor, thus the consumes electric power when reducing heating.
Though above-mentioned ptc heater is the temperature booster with characteristic of consumes electric power step-down along with the temperature rising; But when cold, when going beginning etc.; Do not rise therefore ptc heater of the air-conditioner temperature of vehicle supports under the condition that the temperature of body do not rise, and the problem that consumes more electric power is still arranged.Particularly in elec. vehicle,, when the consumes electric power of air conditioner for vehicles increases, the problem that operating range shortens and charging in intervals shortens of vehicle is arranged because the driving energy that goes of vehicle all depends on battery.
Patent documentation
Patent documentation 1: TOHKEMY 2008-13115 communique.
Summary of the invention
The problem points that solves is, the air-conditioning of the vehicle consumes electric power that needs that particularly heats is many, the problem that vehicle range shortens and charging in intervals shortens.
Topmost being characterised in that of the present invention; The interior gas of in vehicle, blowing and outside in the setting of air-supply stream and heating system for vehicle that wind pushing air is heated of any wind pushing air at least of gas; The present invention possesses: framework, be arranged in the said air-supply stream, and have the hollow bulb that wind pushing air can circulate; Wind pushing air can flow into and flow out the opening of air supply direction weather side and downwind side, and this framework by can electromagnetic screening the metallic material of microwave constitute; Support body, be arranged in the hollow bulb of this framework; Microwave absorbs exothermic body, supports body for this and separates many of suitable arranged spaced, have both ends air supply direction weather side that supports body and downwind side opening hollow bulb; And microwave output unit; Be arranged in the framework; Absorb exothermic body output microwave towards each microwave; Said heating unit wind pushing air in microwave absorbs the hollow bulb of exothermic body from the air supply direction weather side when alee effluent is logical, through being accompanied by the heating that microwave that microwave absorbs exothermic body absorbs wind pushing air is heated.
The present invention can reduce the electric power that heating consumed of vehicle, can increase vehicle range and increase charging in intervals.
Description of drawings
Fig. 1 is the cross sectional illustration figure of summary of air-conditioning unit of the air conditioner for vehicles of expression embodiment 1.
Fig. 2 is the cross sectional illustration figure of heating unit.
Fig. 3 is that the part of heater core is cut off instruction diagram.
Fig. 4 is the instruction diagram of expression according to the heat effect of embodiment 1.
Fig. 5 is the cross sectional illustration figure that the heating unit of part cut-out embodiment 2 is represented.
Fig. 6 is that the part of heater core is cut off instruction diagram.
Fig. 7 is the instruction diagram of expression according to the heat effect of embodiment 2.
The specific embodiment
The most preferred embodiment of the present invention is when any wind pushing air at least of interior gas and outer gas circulates in microwave absorbs the hollow bulb of exothermic body, and heat-producing microwave absorbs exothermic body the wind pushing air that circulates is heated through the absorption that is accompanied by microwave.
Embodiment 1
Below, according to expression the figure that heating system for vehicle of the present invention is configured in the embodiment in the air-conditioning unit is explained the present invention.
Fig. 1 to Fig. 3 representes the example of the air conditioner for vehicles that motor vehicle driven by mixed power is used; The air-conditioning unit 1 that constitutes air conditioner for vehicles is provided in the below of the instrument carrier panel in the car, changes (the mixing air of gas and outer gas in comprising of any wind pushing air at least of an interior gas that sucks and outer gas via inside and outside autogenous cutting through the rotation of not shown blowing engine (blower fan).) blow in air-conditioning unit 1 via air introducing port 3.To the air of air-conditioning unit 1 air-supply through evaporator and after being cooled, with the cooresponding ratio of the aperture of air mix door in the heating unit 7 of heating system for vehicle through or (by pass) along separate routes, be generated as the air-conditioning wind of set point of temperature.This air-conditioning wind flows out from air-conditioning unit 1 via the blow-off outlet door that opens and closes according to blowing out pattern, blows in car through piping.
Have again; Symbol 9 among the figure is to be used for when exhaust (vent) pattern from the exhausr port of exhaust blow-off outlet towards passenger's air-supply; The 11st, be used for when defrosting mode from the defroster of defrosting blow-off port towards the air-supply of the inboard of window, the 13rd, be used for when the foot pattern from the foot mouth of foot blow-off outlet towards the air-supply of passenger's underfooting.In addition, in the air-conditioning unit 1 that arrives above-mentioned each mouthful 9,11,13, be respectively arranged with the door that opens and closes air-supply, but omit diagram.
The framework 15 of the heating unit 7 of above-mentioned heating system for vehicle be air supply direction the both end sides opening cylinder or square barrel shape, the metallic material of the corrosion-resistant steel of the microwave reflection of stating later on, aluminium etc. forms.And the air supply direction pars intermedia in this framework 15 disposes heater core 17 with the mode of relative air supply direction quadrature.This heater core 17 constitutes and comprises: support body 21, be the shape ground of turning back in inside and form cooling water flow road 19 and cooling water expansion tank can be circulated; And the microwave of tubulose absorbs exothermic body 23; Dispose many with the mode that in the next door 19a of above-mentioned inwall that supports body 21 and cooling water expansion tank stream 19, adjoins each other; Has axis at air supply direction; Have hollow bulb 23a, this hollow bulb 23a carries out opening at the axis direction two ends at the face of the above-mentioned air supply direction windward that supports body 21 and the face of leeward.
Have again; Inside at heater core 17; Engine cooling water in above-mentioned cooling water expansion tank stream 19 through circulating, when cold, during the starting beginning, through after the microwave the stated heat effect that absorbs exothermic body 23 heated; And when the temperature of engine cooling water rises, microwave is absorbed the wind pushing air heating that exothermic body 23 is heated and made circulation.In addition, the symbol 17a among the figure is the introducing port of cooling water expansion tank, and 17b is a discharge orifice.
Above-mentionedly support body 21 for example (the magnet conductivity pottery of 2～10GHz) microwave penetrating, resistance to effect of heat synthetic resin etc. form by making microwave band.In addition, microwave absorption exothermic body 23 is formed by the electromagnetic wave absorbent material of the for example ferrite with microwave absorption characteristic, permalloy, oxidizing slag etc.Because it is same agglomerated materials with supporting body 21 that microwave absorbs exothermic body 23, so can be through they are formed and fire and make with incorporate state.
Have again, be decided to be under the situation of oxidizing slag at the electromagnetic wave absorbent material that microwave is absorbed exothermic body 23, thus through with the powder mixes of oxidizing slag to pottery and fire and can obtain.
And the microwave oscillation device 25 of a part that constitutes the microwave output unit is installed in the outside of above-mentioned framework 15.In addition; With the inside of the cooresponding framework 15 of air supply direction weather side of heater core 17; The antenna member 27 of the part of the formation microwave output unit that is connected in microwave oscillation device 25 is installed, makes from the microwave of microwave oscillation device 25 vibrations to absorb exothermic body 23 outputs towards each microwave.
Above-mentioned microwave oscillation device 25 is made up of the semiconductor microactuator wave oscillator, and (laser diode of 2～10GHz) microwave and multistage amplifier constitute this semiconductor microactuator wave oscillator by exporting microwave band with for example 50～100W.As microwave, preferably utilize electric wave method etc. to be assigned as industrial, science for example 2.45GHz frequency band, but be not limited to said frequencies and output with, medical etc. purposes.In addition, as the microwave oscillation member, known is axitron usually, but for the purposes that is equipped on vehicle as present embodiment, owing to vibration, heat etc. cause the possibility of vacuum tube breakage high, so the semiconductor microactuator wave oscillator is fit to.
At the air supply direction weather side end of above-mentioned framework 15 and the peristome of downwind side; To cover peristome single-piece mode micro-wave screening member 29/31 is installed, said micro-wave screening member 29/31 has the many opening 29a/31a that are made up of the little size of 1/4 λ than the microwave that sends from microwave oscillation device 25.This micro-wave screening member 29/31 is the structure of above-mentioned many opening 29a/31a being carried out punching (punching) processing at the metal sheet of for example corrosion-resistant steel, aluminium etc.; Or the net structure that will weave with mode at the conductive material that metal fibre, synthetic resin yarn are coated with electroconductive resin with above-mentioned many opening 29a/31a, or utilize electroconductive resin sheet material (plate) that electroconductive resin is shaped with the mode with above-mentioned many opening 29a/31a etc. any all can.
Have again; Above-mentioned microwave oscillation device 25 according to through near each blow-off outlet, the temperature of the air of temperature sensor (not shown) sensing that is provided with of the air supply direction downwind side of heating unit 7 and by ON-OFF control, control with the mode of the air of seeing predefined temperature off.In addition, above-mentioned framework 15 and micro-wave screening member 29/31 are by electrical ground.
Then, the heat effect of the wind pushing air of the heating unit 7 of the heating system for vehicle of formation describes to utilizing in the above described manner.
When cold, when the starting of driving engine begins; When starter (starter) and during fire an engine by ON operation; Operating switch at air conditioner for vehicles is changed under the situation of ON; Mode to circulate in the microwave absorption exothermic body 23 of the rotation blower air of to air-conditioning unit 1 in, blowing through the heater core 17 in evaporator 5 and the heating unit 7 is blown; And make microwave oscillation device 25 carry out ON work, absorb exothermic body 23 output microwaves towards each microwave from antenna member 27.
At this moment, microwave absorbs the microwave that exothermic body 23 will see through the microwave that supports body 21, directly output and utilize its magnetic field loss, electric field loss to be transformed into thermal energy and to absorb, and generates heat thus and the wind pushing air that in hollow bulb 23a, circulates is heated.(with reference to Fig. 4)
Have again; The most of microwave that in framework 15, export from antenna member 27 are absorbed exothermic body 23 absorptions and the thermotropism energy conversion by microwave on one side in framework 15 internal reflections on one side; But the part of microwave quilt is towards the peristome lateral reflection in framework 15; Owing to the peristome 29a/31a impassabitity of microwave, so restriction spills to exterior with respect to each the micro-wave screening member 29/31 that is arranged on peristome.Prevent the radio interference of microwave thus to the electronic machine that is equipped on vehicle.In addition, the microwave that has generated heat absorbs exothermic body 23 and not only wind pushing air is heated, and makes the cooling water expansion tank heating of circulation in the cooling water expansion tank stream 19 through the part of thermal energy.
And when the temperature of cooling water expansion tank rises to the temperature that can heat to wind pushing air or utilize heating unit 7 heating and the wind pushing air that in vehicle chamber, blows out when being heated to predefined temperature; Make microwave oscillation device 25 carry out OFF work, the heating of the wind pushing air that utilizes heating unit 7 is stopped.On the other hand,, make microwave oscillation device 25 carry out ON work once more, utilize heating unit 7 that wind pushing air is heated being become design temperature by the temperature of the wind pushing air of being blown when following.
The temperature that causes microwave to absorb exothermic body 23 from the microwave of microwave oscillation device 25 outputs has been shown in table 1 to rise.In this example, the output of microwave oscillation device is made as 100W, the wavelength of microwave is made as 2.45GHz.
[table 1]
The wind pushing air utilization of in microwave absorbs the hollow bulb 23a of exothermic body 23, circulating as stated is heated to 75 ℃ through the microwave absorption exothermic body 23 of microwave heating during about 1 minute.
Because in the present embodiment, as can using the microwave that absorbs low output and heat-producing microwave absorbs exothermic body 23 wind pushing air is heated to desired temperatures in the unit that wind pushing air is heated, so can reduce heating need the consumption of electricity.
Embodiment 2
Fig. 5 and Fig. 6 show electric vehicles or are applicable to the example of the air conditioner for vehicles of the motor vehicle driven by mixed power that is equipped with air-cooled engine; Except that the point of the heater core that constitutes heating unit 51 in the following manner 53; Because identical, omit detailed explanation about other structure so add prosign with embodiment 1.
For the framework 15 of heating unit 51, to dispose heater core 53 with respect to the mode of air supply direction quadrature at the air supply direction pars intermedia.This heater core 53 support body 55 constitutes the spatial portion that can seal framework 15 with magnet conductivity pottery, resistance to effect of heat synthetic resin material etc. size tabular.Support body 55 separates regulation at longitudinal direction and transverse direction the many microwaves absorption exothermic bodys 57 that have axis, have hollow bulb 57a at central part that are arranged at intervals with at air supply direction at this.Above-mentioned microwave absorption exothermic body 57 forms tubulose by the electromagnetic wave absorbing of ferrite, permalloy etc.
Have, graphic microwave absorbs exothermic body 57 and adopts its axis direction end and the face of the air supply direction windward that supports body 55 and the consistent structure of face of leeward again, but adopts each end that makes axis direction also can from the outstanding structure of each face that supports body 55.
Then, the heat effect of the air of the heating unit 53 of the heating system for vehicle of formation describes to utilizing in the above described manner.
When cold, when the starting of driving engine begins; When starter and during fire an engine by ON operation; Operating switch at air conditioner for vehicles is changed under the situation of ON; Absorb the mode that circulates in the exothermic body 57 with the microwave of the rotation blower air of to air-conditioning unit 50 in, blow through the heater core 53 evaporator 5 and heating unit 51 in and blow, and make microwave oscillation device 25 carry out ON to work, export microwaves towards each microwave absorption exothermic body 57 from antenna member 27.
At this moment, microwave absorbs exothermic body 57 and utilizes its magnetic field loss, electric field loss to carry out the thermal energy conversion and absorb in the microwave of output, generates heat thus and makes the wind pushing air heating of in hollow bulb 57a, circulating.(with reference to Fig. 7)
And; When the wind pushing air that utilizes heating unit 51 heating and in vehicle chamber, blow out is heated to predefined temperature, based on signal microwave oscillation device 25 is carried out OFF control from the said temperature sensor, the heating of the wind pushing air that utilizes heating unit 51 is stopped; On the other hand; Being become design temperature by the temperature of the wind pushing air of being blown when following, make microwave oscillation device 25 carry out ON work once more on the contrary, utilize heating unit 51 that wind pushing air is heated.
In the explanation of embodiment 1 and 2; Employing is housed in the structure in the air-conditioning unit with heating unit; But the installation place of the heating unit among the present invention is not limited thereto, and the structure that is arranged on the part of the air supply duct that wind pushing air is blown in vehicle also can.
In above-mentioned explanation, be illustrated as magnet conductivity stupalith or resistance to effect of heat synthetic resin material supporting body 21,55, but, be also can with the tabular metallic material that stainless steel material, aluminum are processed as the body that supports of the present invention.Supporting under the situation of body constituting, to be provided with and to insert the mounting hole that each microwave of embedding absorbs exothermic body respectively and fix the end that each microwave absorbs exothermic body supporting body, to make its major part side-prominent to the microwave output unit with metal sheet.
Thus microwave absorb exothermic body to the microwave of direct output, through in the framework or the microwave that supports the body reflection absorb and generate heat, make the wind pushing air heating of in hollow bulb, circulating.
In addition; In that the metal body that supports is being installed under the situation of microwave absorption exothermic body to the weather side and the outstanding mode of downwind side of air supply direction respectively with each end, promptly adopt the structure that install to the weather side and the outstanding mode of downwind side of air supply direction each end so that the mounting hole that supports body is inserted the axis direction pars intermedia of embedding microwave absorption exothermic body also can.In this case, the microwave output unit is set, makes to absorb exothermic body to each side-prominent microwave and absorb microwave and come the wind pushing air that in hollow bulb, circulates heated and get final product in the both sides of air supply direction weather side that supports body and downwind side.
In the heating unit of above-mentioned explanation to being illustrated mainly as the unit that in the heating installation of motor vehicle driven by mixed power, elec. vehicle, uses; Even but for the vehicle that carries driving engine in addition; Also can the cooling water expansion tank of driving engine disposed heating unit of the present invention as the air supply direction weather side or the downwind side of the heater core of thermal source, use as the assistant heating unit that wind pushing air is heated in during till rising to cooling water temperature.
Claims (11)
1. the heating unit of a heating system for vehicle, said heating system for vehicle the interior gas of in vehicle, blowing and outside gas any wind pushing air at least the setting of air-supply stream and wind pushing air heated, wherein, said heating unit possesses:
Framework is arranged in the said air-supply stream, has the hollow bulb that wind pushing air can circulate, and wind pushing air can flow into and flow out the opening of air supply direction weather side and downwind side, and this framework by can electromagnetic screening the metallic material of microwave constitute;
Support body, be arranged in the hollow bulb of this framework;
Microwave absorbs exothermic body, supports body for this and separates many of suitable arranged spaced, have both ends air supply direction weather side that supports body and downwind side opening hollow bulb; And
The microwave output unit is arranged in the framework, absorbs exothermic body output microwave towards each microwave,
Said heating unit wind pushing air in microwave absorbs the hollow bulb of exothermic body from the air supply direction weather side when alee effluent is logical, through being accompanied by the heating that microwave that microwave absorbs exothermic body absorbs wind pushing air is heated.
2. the heating unit of heating system for vehicle according to claim 1, wherein, heating unit is arranged in the air-conditioning unit of air conditioner for vehicles.
3. the heating unit of heating system for vehicle according to claim 1, wherein, heating unit is arranged on the part of the air supply duct that makes the wind pushing air circulation.
4. the heating unit of heating system for vehicle according to claim 1 wherein, supports body and is made up of the magnet conductivity stupalith that makes microwave penetrating, and microwave absorb exothermic body by Ferrite Material, permalloy, oxidizing slag any constitutes at least.
5. the heating unit of heating system for vehicle according to claim 1 wherein, supports body and is made up of resistance to effect of heat synthetic resin material, and microwave absorb exothermic body by Ferrite Material, permalloy, oxidizing slag any constitutes at least.
6. the heating unit of heating system for vehicle according to claim 1 wherein, supports body by microwave reflection and have with metallic material that microwave absorbs the consistent opening of the hollow bulb of exothermic body and constitute.
7. the heating unit of heating system for vehicle according to claim 6, wherein, microwave absorbs exothermic body and supports body with relative metallic and install to a side-prominent mode that is provided with the microwave output unit.
8. the heating unit of heating system for vehicle according to claim 1; Wherein, It is the tube shape that has axis in the direction consistent with air supply direction that microwave absorbs exothermic body, and give prominence to from the face of the air supply direction weather side that supports body and the face of downwind side each end of axis direction.
9. the heating unit of heating system for vehicle according to claim 1 wherein, in supporting body, is the cooling water expansion tank stream that is provided with the cooling water expansion tank circulation in inside with turning back shape, can wind pushing air and the cooling water expansion tank that in hollow bulb, circulates be heated together.
10. the heating unit of heating system for vehicle according to claim 1; Wherein, At the air supply direction weather side of said framework and the peristome of downwind side, be respectively arranged with micro-wave screening member with many openings that can make wind pushing air inflow and outflow and electromagnetic screening microwave.
11. the heating unit of heating system for vehicle according to claim 10, wherein, it is many openings that the size below 1/4 wavelength of microwave constitutes that the micro-wave screening member has by internal diameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110131802.2A CN102785550B (en) | 2011-05-20 | 2011-05-20 | The heating unit of heating system for vehicle |
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| CN201110131802.2A CN102785550B (en) | 2011-05-20 | 2011-05-20 | The heating unit of heating system for vehicle |
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| CN102785550A true CN102785550A (en) | 2012-11-21 |
| CN102785550B CN102785550B (en) | 2016-08-17 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0370510U (en) * | 1989-11-14 | 1991-07-16 | ||
| JPH054511A (en) * | 1991-02-08 | 1993-01-14 | Zexel Corp | Heat pump type air conditioner for automobile |
| US5528900A (en) * | 1994-06-01 | 1996-06-25 | Prasad; Mukesh | Instant automobile cooling system |
| DE10029095A1 (en) * | 2000-06-13 | 2001-03-29 | Rcc Polymertechnik Gmbh | Heating method for car interiors, comprises using microwaves to treat semiconducting cross-linked organopolysiloxane elastomers containing e.g. carbon black or polyanilin filler |
| CN1332347A (en) * | 2000-07-06 | 2002-01-23 | 株式会社电装 | Coolant circulating system having hot-air bypath structure |
| JP2003104041A (en) * | 2001-09-28 | 2003-04-09 | Japan Climate Systems Corp | Fluid heating device and air conditioner for vehicle using the same |
| CN1297792C (en) * | 1999-06-07 | 2007-01-31 | 三菱重工业株式会社 | Vehicle air conditioner using heat pump |
| CN100581303C (en) * | 2002-04-11 | 2010-01-13 | 瓦莱奥空调公司 | Electric heating device for heating unit in vehicle |
-
2011
- 2011-05-20 CN CN201110131802.2A patent/CN102785550B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0370510U (en) * | 1989-11-14 | 1991-07-16 | ||
| JPH054511A (en) * | 1991-02-08 | 1993-01-14 | Zexel Corp | Heat pump type air conditioner for automobile |
| US5528900A (en) * | 1994-06-01 | 1996-06-25 | Prasad; Mukesh | Instant automobile cooling system |
| CN1297792C (en) * | 1999-06-07 | 2007-01-31 | 三菱重工业株式会社 | Vehicle air conditioner using heat pump |
| DE10029095A1 (en) * | 2000-06-13 | 2001-03-29 | Rcc Polymertechnik Gmbh | Heating method for car interiors, comprises using microwaves to treat semiconducting cross-linked organopolysiloxane elastomers containing e.g. carbon black or polyanilin filler |
| CN1332347A (en) * | 2000-07-06 | 2002-01-23 | 株式会社电装 | Coolant circulating system having hot-air bypath structure |
| JP2003104041A (en) * | 2001-09-28 | 2003-04-09 | Japan Climate Systems Corp | Fluid heating device and air conditioner for vehicle using the same |
| CN100581303C (en) * | 2002-04-11 | 2010-01-13 | 瓦莱奥空调公司 | Electric heating device for heating unit in vehicle |
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|---|---|
| CN102785550B (en) | 2016-08-17 |
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Effective date of registration: 20170613 Address after: Nagoya City, Aichi Prefecture, Japan Patentee after: Ji Knicks Co., Ltd. Address before: Aichi Co-patentee before: Lead Industry Co., Ltd. Patentee before: Takumi Co., Ltd. |